A couple of weeks ago I noticed roughly 1/3 or maybe 1/4 of the lights in my third brake light were out on the far right side. I ordered a take-off from a 2003 STS, but a recent check of the original third brake light shows all the lights are lit, and all brighten when the brake pedal is applied. I would think if there's a short, all lights in the third brake light would be effected. Can anyone explain what might have happened to cause a contiguous portion of the third brake light not to work, and then function normally after a couple of weeks? Is it advisable to install the take-off recently purchased, or am I likely to see the same problem occur in time? Thanks for your help.

 

There is a narrow break in the circuit within lamp which depending on temperature connects and disconnects bulbs. Although I never tried it, I knew of people who took lamp a part and soldered circuit boards.

 

Thanks for your reply, slowroll. Do you know if there are multiple circuit boards with the 2003 STS third brake light?

 

3 I think right left and center. bulbs are soldered in place also.

 

Thanks very much!